Study on Properties of Polymer Blends from Polypropylene with Polycaprolactone and Their Biodegradability

Abstract

ABSTRACT:The main problem in preparation of polymer blends is compatibility between polymers mixtures with different properties. This paper describes properties of polymer blends prepared from modified polypropylene (PP) and poly-"-caprolactone (PCL). The preparation of these polymer blends involves modification of PP by oxidation with hydrogen peroxide. A part of the polymer blends consisting oxidized PP and PCL was compatible polymer blends, and the highest compatible polymer blends was obtained in the PP/PCL ratio of 70/30 (% w/w) with low crystallinity. The mechanical properties of polymer blends decreased with increasing of PCL proportion in the polymer blends. Enzymatic degradability of PP-PCL polymer blends were lower than that of PCL, and increased slowly with increasing of PCL content in the polymer blends. The use of oxidized PP in preparation of polymers blends with PCL effectively improves the degradability of the polymer blends due to the increase of compatibility of each component in polymer blends. Furthermore, biodegradation process might occur through hydrolysis of PCL and compatible parts of polymer blends to result in hydroxyl and carboxylate functional groups in the end of polymer chain.

Effects of modified atmosphere packaging on quality attributes and physiological responses of fresh-cut crisphead lettuce

“…It provides a moderate barrier to moisture, gases, and odors (Aracana, Bundjali, Yudistira, Jariah, & Sukria, 2007).…”

Fabrication and characterization of hydrophilic poly(ε‐caprolactone)/pluronic P123 electrospun fibers

“…PCL, a synthetic and semi‐crystalline polymer with repeating units, has been extensively used in tissue engineering because of its good biocompatibility, biodegradability, mechanical properties, and ease of processing and undergoes hydrolysis without producing any toxic byproducts. However, the main barrier for using PCL particularly as scaffolding materials is its hydrophobic character …”

Theory and Practice of Obtaining Composite Materials Based on Polymer Blends

“…This contradiction put forward as one of the most important economic problems -the need to develop industrial technology to produce new types of composite materials with significantly enhanced performance capabilities on the basis of manufactured polyolefins and heterochain polymers, to offer the production of new high-performance products using existing production facilities and process equipment. However, in spite the great economic and technical benefits of composite materials manufacturing based on the production of largecapacity polyolefins and heterochain polymers, until recently, in Azerbaijan as in other regions of the world industrial production of individual polymers appeared: butyl rubber, polyvinyl chloride, chlorocarboxylated polyethylene, high density polyethylene, polyurethane and others which significantly reduced the efficiency for their use in the national economy, export opportunities [1][2][3][4][5][6][7][8][9][10][11].…”